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  <a href="#4" class="md-nav__link">
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      (4)
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  <a href="#5" class="md-nav__link">
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      （5）
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  <a href="#6jdbc" class="md-nav__link">
    <span class="md-ellipsis">
      (6)JDBC资源泄露
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  <a href="#7classnotfoundexception" class="md-nav__link">
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      (7)ClassNotFoundException
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  <a href="#8springbootspring-boot-maven-plugin" class="md-nav__link">
    <span class="md-ellipsis">
      （8）springboot的spring-boot-maven-plugin异常
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            <div class="md-content" data-md-component="content">
              <article class="md-content__inner md-typeset">
                
                  

  
  


  <h1>报错</h1>

<h3 id="1">(1)</h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a>C:<span class="se">\U</span>sers<span class="se">\李</span>恒<span class="se">\D</span>esktop<span class="se">\c</span>ode<span class="se">\j</span>ava<span class="se">\G</span>UI<span class="se">\S</span>impleCodeEditor.java:44:2
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>java:<span class="w"> </span>进行语法分析时已到达文件结尾
</span></code></pre></div>
<h3 id="2">(2)</h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>C:<span class="se">\U</span>sers<span class="se">\李</span>恒<span class="se">\D</span>esktop<span class="se">\c</span>ode<span class="se">\j</span>ava<span class="se">\a</span>liyun_java_sdk_3.10.2&gt;java<span class="w"> </span>-cp<span class="w"> </span><span class="s2">&quot;.;C:\Users\李恒\Desktop\code\java\aliyun_java_sdk_3.10.2\aliyun-sdk-oss-3.10.2.jar&quot;</span><span class="w"> </span>OSSFileManager
</span><span id="__span-1-2"><a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a>Exception<span class="w"> </span><span class="k">in</span><span class="w"> </span>thread<span class="w"> </span><span class="s2">&quot;AWT-EventQueue-0&quot;</span><span class="w"> </span>java.lang.NoClassDefFoundError:<span class="w"> </span>org/apache/http/client/CredentialsProvider
</span><span id="__span-1-3"><a id="__codelineno-1-3" name="__codelineno-1-3" href="#__codelineno-1-3"></a><span class="w">        </span>at<span class="w"> </span>com.aliyun.oss.OSSClient.&lt;init&gt;<span class="o">(</span>OSSClient.java:223<span class="o">)</span>
</span><span id="__span-1-4"><a id="__codelineno-1-4" name="__codelineno-1-4" href="#__codelineno-1-4"></a><span class="w">        </span>at<span class="w"> </span>com.aliyun.oss.OSSClientBuilder.build<span class="o">(</span>OSSClientBuilder.java:33<span class="o">)</span>
</span><span id="__span-1-5"><a id="__codelineno-1-5" name="__codelineno-1-5" href="#__codelineno-1-5"></a><span class="w">        </span>at<span class="w"> </span>OSSFileManager.createAndShowGUI<span class="o">(</span>OSSFileManager.java:31<span class="o">)</span>
</span><span id="__span-1-6"><a id="__codelineno-1-6" name="__codelineno-1-6" href="#__codelineno-1-6"></a><span class="w">        </span>at<span class="w"> </span>OSSFileManager.lambda<span class="nv">$main$0</span><span class="o">(</span>OSSFileManager.java:26<span class="o">)</span>
</span><span id="__span-1-7"><a id="__codelineno-1-7" name="__codelineno-1-7" href="#__codelineno-1-7"></a><span class="w">        </span>at<span class="w"> </span>java.awt.event.InvocationEvent.dispatch<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-8"><a id="__codelineno-1-8" name="__codelineno-1-8" href="#__codelineno-1-8"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventQueue.dispatchEventImpl<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-9"><a id="__codelineno-1-9" name="__codelineno-1-9" href="#__codelineno-1-9"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventQueue.access<span class="nv">$500</span><span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-10"><a id="__codelineno-1-10" name="__codelineno-1-10" href="#__codelineno-1-10"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventQueue<span class="nv">$3</span>.run<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-11"><a id="__codelineno-1-11" name="__codelineno-1-11" href="#__codelineno-1-11"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventQueue<span class="nv">$3</span>.run<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-12"><a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a><span class="w">        </span>at<span class="w"> </span>java.security.AccessController.doPrivileged<span class="o">(</span>Native<span class="w"> </span>Method<span class="o">)</span>
</span><span id="__span-1-13"><a id="__codelineno-1-13" name="__codelineno-1-13" href="#__codelineno-1-13"></a><span class="w">        </span>at<span class="w"> </span>java.security.ProtectionDomain<span class="nv">$JavaSecurityAccessImpl</span>.doIntersectionPrivilege<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-14"><a id="__codelineno-1-14" name="__codelineno-1-14" href="#__codelineno-1-14"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventQueue.dispatchEvent<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-15"><a id="__codelineno-1-15" name="__codelineno-1-15" href="#__codelineno-1-15"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventDispatchThread.pumpOneEventForFilters<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-16"><a id="__codelineno-1-16" name="__codelineno-1-16" href="#__codelineno-1-16"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventDispatchThread.pumpEventsForFilter<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-17"><a id="__codelineno-1-17" name="__codelineno-1-17" href="#__codelineno-1-17"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventDispatchThread.pumpEventsForHierarchy<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-18"><a id="__codelineno-1-18" name="__codelineno-1-18" href="#__codelineno-1-18"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventDispatchThread.pumpEvents<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-19"><a id="__codelineno-1-19" name="__codelineno-1-19" href="#__codelineno-1-19"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventDispatchThread.pumpEvents<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-20"><a id="__codelineno-1-20" name="__codelineno-1-20" href="#__codelineno-1-20"></a><span class="w">        </span>at<span class="w"> </span>java.awt.EventDispatchThread.run<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-21"><a id="__codelineno-1-21" name="__codelineno-1-21" href="#__codelineno-1-21"></a>Caused<span class="w"> </span>by:<span class="w"> </span>java.lang.ClassNotFoundException:<span class="w"> </span>org.apache.http.client.CredentialsProvider
</span><span id="__span-1-22"><a id="__codelineno-1-22" name="__codelineno-1-22" href="#__codelineno-1-22"></a><span class="w">        </span>at<span class="w"> </span>java.net.URLClassLoader.findClass<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-23"><a id="__codelineno-1-23" name="__codelineno-1-23" href="#__codelineno-1-23"></a><span class="w">        </span>at<span class="w"> </span>java.lang.ClassLoader.loadClass<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-24"><a id="__codelineno-1-24" name="__codelineno-1-24" href="#__codelineno-1-24"></a><span class="w">        </span>at<span class="w"> </span>sun.misc.Launcher<span class="nv">$AppClassLoader</span>.loadClass<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-25"><a id="__codelineno-1-25" name="__codelineno-1-25" href="#__codelineno-1-25"></a><span class="w">        </span>at<span class="w"> </span>java.lang.ClassLoader.loadClass<span class="o">(</span>Unknown<span class="w"> </span>Source<span class="o">)</span>
</span><span id="__span-1-26"><a id="__codelineno-1-26" name="__codelineno-1-26" href="#__codelineno-1-26"></a><span class="w">        </span>...<span class="w"> </span><span class="m">18</span><span class="w"> </span>more
</span></code></pre></div>
<h3 id="3">(3)</h3>
<p>maven构建错误，阿里云源已检查（通过运行一个简单的 Maven 命令来检查代理或镜像是否生效，例如 mvn help:effective-pom）
<div class="language-bash highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a><span class="o">[</span>WARNING<span class="o">]</span><span class="w"> </span>The<span class="w"> </span>requested<span class="w"> </span>profile<span class="w"> </span><span class="s2">&quot;proxy&quot;</span><span class="w"> </span>could<span class="w"> </span>not<span class="w"> </span>be<span class="w"> </span>activated<span class="w"> </span>because<span class="w"> </span>it<span class="w"> </span>does<span class="w"> </span>not<span class="w"> </span>exist.
</span><span id="__span-2-2"><a id="__codelineno-2-2" name="__codelineno-2-2" href="#__codelineno-2-2"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>Failed<span class="w"> </span>to<span class="w"> </span>execute<span class="w"> </span>goal<span class="w"> </span>on<span class="w"> </span>project<span class="w"> </span>aliyun-ecs-demo:<span class="w"> </span>Could<span class="w"> </span>not<span class="w"> </span>resolve<span class="w"> </span>dependencies<span class="w"> </span><span class="k">for</span><span class="w"> </span>project<span class="w"> </span>com.example:aliyun-ecs-demo:jar:1.0-SNAPSHOT:<span class="w"> </span>The<span class="w"> </span>following<span class="w"> </span>artifacts<span class="w"> </span>could<span class="w"> </span>not<span class="w"> </span>be<span class="w"> </span>resolved:<span class="w"> </span>com.aliyun:aliyun-java-sdk-core:jar:3.10.2<span class="w"> </span><span class="o">(</span>absent<span class="o">)</span>,<span class="w"> </span>com.aliyun:aliyun-java-sdk-ecs:jar:3.10.2<span class="w"> </span><span class="o">(</span>absent<span class="o">)</span>:<span class="w"> </span>com.aliyun:aliyun-java-sdk-core:jar:3.10.2<span class="w"> </span>was<span class="w"> </span>not<span class="w"> </span>found<span class="w"> </span><span class="k">in</span><span class="w"> </span>https://maven.aliyun.com/repository/public<span class="w"> </span>during<span class="w"> </span>a<span class="w"> </span>previous<span class="w"> </span>attempt.<span class="w"> </span>This<span class="w"> </span>failure<span class="w"> </span>was<span class="w"> </span>cached<span class="w"> </span><span class="k">in</span><span class="w"> </span>the<span class="w"> </span><span class="nb">local</span><span class="w"> </span>repository<span class="w"> </span>and<span class="w"> </span>resolution<span class="w"> </span>is<span class="w"> </span>not<span class="w"> </span>reattempted<span class="w"> </span><span class="k">until</span><span class="w"> </span>the<span class="w"> </span>update<span class="w"> </span>interval<span class="w"> </span>of<span class="w"> </span>aliyunmaven<span class="w"> </span>has<span class="w"> </span>elapsed<span class="w"> </span>or<span class="w"> </span>updates<span class="w"> </span>are<span class="w"> </span>forced<span class="w"> </span>-&gt;<span class="w"> </span><span class="o">[</span>Help<span class="w"> </span><span class="m">1</span><span class="o">]</span>
</span><span id="__span-2-3"><a id="__codelineno-2-3" name="__codelineno-2-3" href="#__codelineno-2-3"></a><span class="o">[</span>ERROR<span class="o">]</span>
</span><span id="__span-2-4"><a id="__codelineno-2-4" name="__codelineno-2-4" href="#__codelineno-2-4"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>To<span class="w"> </span>see<span class="w"> </span>the<span class="w"> </span>full<span class="w"> </span>stack<span class="w"> </span>trace<span class="w"> </span>of<span class="w"> </span>the<span class="w"> </span>errors,<span class="w"> </span>re-run<span class="w"> </span>Maven<span class="w"> </span>with<span class="w"> </span>the<span class="w"> </span>-e<span class="w"> </span>switch.
</span><span id="__span-2-5"><a id="__codelineno-2-5" name="__codelineno-2-5" href="#__codelineno-2-5"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>Re-run<span class="w"> </span>Maven<span class="w"> </span>using<span class="w"> </span>the<span class="w"> </span>-X<span class="w"> </span>switch<span class="w"> </span>to<span class="w"> </span><span class="nb">enable</span><span class="w"> </span>full<span class="w"> </span>debug<span class="w"> </span>logging.
</span><span id="__span-2-6"><a id="__codelineno-2-6" name="__codelineno-2-6" href="#__codelineno-2-6"></a><span class="o">[</span>ERROR<span class="o">]</span>
</span><span id="__span-2-7"><a id="__codelineno-2-7" name="__codelineno-2-7" href="#__codelineno-2-7"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>For<span class="w"> </span>more<span class="w"> </span>information<span class="w"> </span>about<span class="w"> </span>the<span class="w"> </span>errors<span class="w"> </span>and<span class="w"> </span>possible<span class="w"> </span>solutions,<span class="w"> </span>please<span class="w"> </span><span class="nb">read</span><span class="w"> </span>the<span class="w"> </span>following<span class="w"> </span>articles:
</span><span id="__span-2-8"><a id="__codelineno-2-8" name="__codelineno-2-8" href="#__codelineno-2-8"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span><span class="o">[</span>Help<span class="w"> </span><span class="m">1</span><span class="o">]</span><span class="w"> </span>http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
</span></code></pre></div></p>
<h3 id="4">(4)</h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="o">[</span>INFO<span class="o">]</span><span class="w"> </span>BUILD<span class="w"> </span>FAILURE
</span><span id="__span-3-2"><a id="__codelineno-3-2" name="__codelineno-3-2" href="#__codelineno-3-2"></a><span class="o">[</span>INFO<span class="o">]</span><span class="w"> </span>------------------------------------------------------------------------
</span><span id="__span-3-3"><a id="__codelineno-3-3" name="__codelineno-3-3" href="#__codelineno-3-3"></a><span class="o">[</span>INFO<span class="o">]</span><span class="w"> </span>Total<span class="w"> </span>time:<span class="w">  </span><span class="m">1</span>.538<span class="w"> </span>s
</span><span id="__span-3-4"><a id="__codelineno-3-4" name="__codelineno-3-4" href="#__codelineno-3-4"></a><span class="o">[</span>INFO<span class="o">]</span><span class="w"> </span>Finished<span class="w"> </span>at:<span class="w"> </span><span class="m">2024</span>-05-24T01:15:55+08:00
</span><span id="__span-3-5"><a id="__codelineno-3-5" name="__codelineno-3-5" href="#__codelineno-3-5"></a><span class="o">[</span>INFO<span class="o">]</span><span class="w"> </span>------------------------------------------------------------------------
</span><span id="__span-3-6"><a id="__codelineno-3-6" name="__codelineno-3-6" href="#__codelineno-3-6"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>Failed<span class="w"> </span>to<span class="w"> </span>execute<span class="w"> </span>goal<span class="w"> </span>on<span class="w"> </span>project<span class="w"> </span>aliyun-ecs-demo:<span class="w"> </span>Could<span class="w"> </span>not<span class="w"> </span>resolve<span class="w"> </span>dependencies<span class="w"> </span><span class="k">for</span><span class="w"> </span>project<span class="w"> </span>com.example:aliyun-ecs-demo:jar:1.0-SNAPSHOT:<span class="w"> </span>The<span class="w"> </span>following<span class="w"> </span>artifacts<span class="w"> </span>could<span class="w"> </span>not<span class="w"> </span>be<span class="w"> </span>resolved:<span class="w"> </span>com.aliyun:aliyun-java-sdk-core:jar:3.10.2<span class="w"> </span><span class="o">(</span>absent<span class="o">)</span>,<span class="w"> </span>com.aliyun:aliyun-java-sdk-ecs:jar:3.10.2<span class="w"> </span><span class="o">(</span>absent<span class="o">)</span>:<span class="w"> </span>Could<span class="w"> </span>not<span class="w"> </span>find<span class="w"> </span>artifact<span class="w"> </span>com.aliyun:aliyun-java-sdk-core:jar:3.10.2<span class="w"> </span><span class="k">in</span><span class="w"> </span>alimaven<span class="w"> </span><span class="o">(</span>http://maven.aliyun.com/nexus/content/repositories/central/<span class="o">)</span><span class="w"> </span>-&gt;<span class="w"> </span><span class="o">[</span>Help<span class="w"> </span><span class="m">1</span><span class="o">]</span>
</span><span id="__span-3-7"><a id="__codelineno-3-7" name="__codelineno-3-7" href="#__codelineno-3-7"></a><span class="o">[</span>ERROR<span class="o">]</span>
</span><span id="__span-3-8"><a id="__codelineno-3-8" name="__codelineno-3-8" href="#__codelineno-3-8"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>To<span class="w"> </span>see<span class="w"> </span>the<span class="w"> </span>full<span class="w"> </span>stack<span class="w"> </span>trace<span class="w"> </span>of<span class="w"> </span>the<span class="w"> </span>errors,<span class="w"> </span>re-run<span class="w"> </span>Maven<span class="w"> </span>with<span class="w"> </span>the<span class="w"> </span>-e<span class="w"> </span>switch.
</span><span id="__span-3-9"><a id="__codelineno-3-9" name="__codelineno-3-9" href="#__codelineno-3-9"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>Re-run<span class="w"> </span>Maven<span class="w"> </span>using<span class="w"> </span>the<span class="w"> </span>-X<span class="w"> </span>switch<span class="w"> </span>to<span class="w"> </span><span class="nb">enable</span><span class="w"> </span>full<span class="w"> </span>debug<span class="w"> </span>logging.
</span><span id="__span-3-10"><a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="o">[</span>ERROR<span class="o">]</span>
</span><span id="__span-3-11"><a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>For<span class="w"> </span>more<span class="w"> </span>information<span class="w"> </span>about<span class="w"> </span>the<span class="w"> </span>errors<span class="w"> </span>and<span class="w"> </span>possible<span class="w"> </span>solutions,<span class="w"> </span>please<span class="w"> </span><span class="nb">read</span><span class="w"> </span>the<span class="w"> </span>following<span class="w"> </span>articles:
</span><span id="__span-3-12"><a id="__codelineno-3-12" name="__codelineno-3-12" href="#__codelineno-3-12"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span><span class="o">[</span>Help<span class="w"> </span><span class="m">1</span><span class="o">]</span><span class="w"> </span>http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
</span></code></pre></div>
<h3 id="5">（5）</h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a>java.lang.ClassNotFoundException:<span class="w"> </span>com.birosoft.liquid.LiquidLookAndFeel
</span><span id="__span-4-2"><a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a><span class="w">        </span>at<span class="w"> </span>java.net.URLClassLoader.findClass<span class="o">(</span>URLClassLoader.java:387<span class="o">)</span>
</span><span id="__span-4-3"><a id="__codelineno-4-3" name="__codelineno-4-3" href="#__codelineno-4-3"></a><span class="w">        </span>at<span class="w"> </span>java.lang.ClassLoader.loadClass<span class="o">(</span>ClassLoader.java:418<span class="o">)</span>
</span><span id="__span-4-4"><a id="__codelineno-4-4" name="__codelineno-4-4" href="#__codelineno-4-4"></a><span class="w">        </span>at<span class="w"> </span>sun.misc.Launcher<span class="nv">$AppClassLoader</span>.loadClass<span class="o">(</span>Launcher.java:355<span class="o">)</span>
</span><span id="__span-4-5"><a id="__codelineno-4-5" name="__codelineno-4-5" href="#__codelineno-4-5"></a><span class="w">        </span>at<span class="w"> </span>java.lang.ClassLoader.loadClass<span class="o">(</span>ClassLoader.java:351<span class="o">)</span>
</span><span id="__span-4-6"><a id="__codelineno-4-6" name="__codelineno-4-6" href="#__codelineno-4-6"></a><span class="w">        </span>at<span class="w"> </span>java.lang.Class.forName0<span class="o">(</span>Native<span class="w"> </span>Method<span class="o">)</span>
</span><span id="__span-4-7"><a id="__codelineno-4-7" name="__codelineno-4-7" href="#__codelineno-4-7"></a><span class="w">        </span>at<span class="w"> </span>java.lang.Class.forName<span class="o">(</span>Class.java:348<span class="o">)</span>
</span><span id="__span-4-8"><a id="__codelineno-4-8" name="__codelineno-4-8" href="#__codelineno-4-8"></a><span class="w">        </span>at<span class="w"> </span>javax.swing.SwingUtilities.loadSystemClass<span class="o">(</span>SwingUtilities.java:1879<span class="o">)</span>
</span><span id="__span-4-9"><a id="__codelineno-4-9" name="__codelineno-4-9" href="#__codelineno-4-9"></a><span class="w">        </span>at<span class="w"> </span>javax.swing.UIManager.setLookAndFeel<span class="o">(</span>UIManager.java:582<span class="o">)</span>
</span><span id="__span-4-10"><a id="__codelineno-4-10" name="__codelineno-4-10" href="#__codelineno-4-10"></a><span class="w">        </span>at<span class="w"> </span>util.GUIUtil.useLNF<span class="o">(</span>GUIUtil.java:99<span class="o">)</span>
</span><span id="__span-4-11"><a id="__codelineno-4-11" name="__codelineno-4-11" href="#__codelineno-4-11"></a><span class="w">        </span>at<span class="w"> </span>startup.Bootstrap.main<span class="o">(</span>Bootstrap.java:12<span class="o">)</span>
</span></code></pre></div>
<h3 id="6jdbc">(6)JDBC资源泄露</h3>
<p>在运行过程中遇到了一个警告，这是由于MySQL连接在程序结束时没有被正确关闭。这可能会导致资源泄漏和其他问题
<div class="language-bash highlight"><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="o">[</span>WARNING<span class="o">]</span><span class="w"> </span>thread<span class="w"> </span>Thread<span class="o">[</span>mysql-cj-abandoned-connection-cleanup,5,com.example.LoginSelect<span class="o">]</span><span class="w"> </span>will<span class="w"> </span>linger<span class="w"> </span>despite<span class="w"> </span>being<span class="w"> </span>asked<span class="w"> </span>to<span class="w"> </span>die<span class="w"> </span>via<span class="w"> </span>interruption
</span><span id="__span-5-2"><a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a><span class="o">[</span>WARNING<span class="o">]</span><span class="w"> </span>NOTE:<span class="w"> </span><span class="m">1</span><span class="w"> </span>thread<span class="o">(</span>s<span class="o">)</span><span class="w"> </span>did<span class="w"> </span>not<span class="w"> </span>finish<span class="w"> </span>despite<span class="w"> </span>being<span class="w"> </span>asked<span class="w"> </span>to<span class="w"> </span>via<span class="w"> </span>interruption.<span class="w"> </span>This<span class="w"> </span>is<span class="w"> </span>not<span class="w"> </span>a<span class="w"> </span>problem<span class="w"> </span>with<span class="w"> </span>exec:java,<span class="w"> </span>it<span class="w"> </span>is<span class="w"> </span>a<span class="w"> </span>problem<span class="w"> </span>with<span class="w"> </span>the<span class="w"> </span>running<span class="w"> </span>code.<span class="w"> </span>Although<span class="w"> </span>not<span class="w"> </span>serious,<span class="w"> </span>it<span class="w"> </span>should<span class="w"> </span>be<span class="w"> </span>remedied.
</span><span id="__span-5-3"><a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a><span class="o">[</span>WARNING<span class="o">]</span><span class="w"> </span>Couldn<span class="err">&#39;</span>t<span class="w"> </span>destroy<span class="w"> </span>threadgroup<span class="w"> </span>org.codehaus.mojo.exec.ExecJavaMojo<span class="nv">$IsolatedThreadGroup</span><span class="o">[</span><span class="nv">name</span><span class="o">=</span>com.example.LoginSelect,maxpri<span class="o">=</span><span class="m">10</span><span class="o">]</span>
</span><span id="__span-5-4"><a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a>java.lang.IllegalThreadStateException
</span></code></pre></div></p>
<h3 id="7classnotfoundexception">(7)ClassNotFoundException</h3>
<p>maven构建时未声明包名<code>package com.example;</code>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="o">[</span>WARNING<span class="o">]</span>
</span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a>java.lang.ClassNotFoundException:<span class="w"> </span>com.example.LoginSelect
</span></code></pre></div></p>
<h3 id="8springbootspring-boot-maven-plugin">（8）springboot的spring-boot-maven-plugin异常</h3>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="o">[</span>ERROR<span class="o">]</span><span class="w"> </span>Failed<span class="w"> </span>to<span class="w"> </span>execute<span class="w"> </span>goal<span class="w"> </span>org.codehaus.mojo:exec-maven-plugin:3.3.0:java<span class="w"> </span><span class="o">(</span>default-cli<span class="o">)</span><span class="w"> </span>on<span class="w"> </span>project<span class="w"> </span>demo:<span class="w"> </span>An<span class="w"> </span>exception<span class="w"> </span>occurred<span class="w"> </span><span class="k">while</span><span class="w"> </span>executing<span class="w"> </span>the<span class="w"> </span>Java<span class="w"> </span>class.<span class="w"> </span>DemoApplication<span class="w"> </span>
</span></code></pre></div>












                
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